| South Portland to Wodzislaw Slaski | 3,965.75 mi (6,382.26 km) |
| South Portland to Wolomin | 3,986.26 mi (6,415.26 km) |
| South Portland to Wolow | 3,850.40 mi (6,196.62 km) |
| South Portland to Wolsztyn | 3,805.53 mi (6,124.40 km) |
| South Portland to Wroclaw | 3,873.47 mi (6,233.74 km) |
| South Portland to Wronki | 3,796.43 mi (6,109.77 km) |
| South Portland to Wrzesnia | 3,852.86 mi (6,200.58 km) |
| South Portland to Wschowa | 3,823.42 mi (6,153.20 km) |
| South Portland to Wysokie Mazowieckie | 4,011.08 mi (6,455.21 km) |
| South Portland to Wyszkow | 3,985.10 mi (6,413.39 km) |
| South Portland to Zabki | 3,983.46 mi (6,410.76 km) |
| South Portland to Zabkowice Slaskie | 3,883.17 mi (6,249.36 km) |
| South Portland to Zabrze | 3,967.53 mi (6,385.11 km) |
| South Portland to Zagan | 3,791.73 mi (6,102.21 km) |
| South Portland to Zakopane | 4,048.22 mi (6,514.99 km) |
